三氧化硫吡啶络合物,98%, 活性 SO

• 产品号: A12202
• CAS号: 26412-87-3
• 分子式: C5H5NO3S
• 分子量: 159.1631
• 纯 度: 98%, active SO3 ca 48-50%

产品别名

• 标题: Sulfur trioxide-pyridine complex
• IUPAC标准名: pyridine; sulfonylideneoxidane
• IUPAC传统名: pyridine; sulfur trioxide
• 别名: Pyridine-sulfur trioxide complex

产品登记号

• EC号: 247-683-3
• MDL号: MFCD00012437
• CAS号: 26412-87-3
• Beilstein号: 3704116

产品性质

• 纯度: 98%, active SO3 ca 48-50%
• 熔点: ca 155-165°C
• GHS危险声明: H301-H314-H318
• 欧盟危险性物质标志: X
• 欧盟危险性物质标志: 腐蚀性(Corrosive) (C)
• GHS警示性声明: P260-P301+P310-P303+P361+P353-P305+P351+P338-P405-P501A
• 危险公开号: 22-34
• 安全公开号: 20-26-36/37/39-45
• 保存注意事项: Moisture Sensitive
• TSCA收录: 是
• 联合国危险货物等级: 8
• 联合国危险货物编号: UN3261
• 联合国危险货物包装类别(PG): II

参考文献

• Converts alcohols to monoalkyl sulfates, utilized in carbohydrate protection: Carbohydr. Res., 127, 211, 131, C8 (1984); J. Org. Chem., 38, 3510 (1973). The pyridinium sulfates of allylic or benzylic alcohols can be deoxygenated in high yields by in situ LiAlH₄ reduction in THF: J. Org. Chem., 34, 3667 (1969); Tetrahedron Lett., 4650 (1972); J. Am. Chem. Soc., 93, 7016 (1971).
• The combination with Dimethyl sulfoxide, A13280, is a mild oxidant for alcohols to carbonyl compounds (Parikh-Doering Reagent): J. Am. Chem. Soc., 89, 5505 (1967), avoiding the very low temperatures required for the Swern and similar systems (see Oxalyl chloride, A18012). With chiral alcohols, less racemization occurs at the ɑ-carbon than with Collins' reagent or pyridinium dichromate: Tetrahedron Lett., 23, 807 (1982); J. Org. Chem., 46, 4799 (1981). Nicolaou utilized the system at 0^oC to convert an epoxy alcohol to the corresponding aldehyde in the synthesis of hemibrevitoxin B: J. Am. Chem. Soc., 115, 3558 (1993).
• Sulfonates indole at the 3-position: Tetrahedron, 29, 669 (1973).
• In combination with NaI, reduces ɑ-halo ketones to ketones: Synthesis, 59 (1979), and sulfoxides to sulfides: Synthesis, 984 (1979).